Grinding mechanism for revolving flats of carding-engines.



J. ro'ssu. GRINDING MECHANISM FOR REVOLVING FLATS OF CARDING ENGINES.

Application filed July 80, 1898.)

No. 647,823. Patnted Apr. |7, |900.

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No. 647,823. Pa tented Apr. 17, I900. J. FOSSEL.

GRINDING MECHANISM FOR REVOLVING FLATS 0F GABDING ENGINES.

(Apiflication filed July 30, 1898.) (N Mo el.) 2 Sheets-Sheet 2.

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NITED STATES PATENT OFFICE.

JOSEPH FOSSEL, OF BOSTON, MASSACHUSETTS.

GRINDING MECHANISM FOR REVOLVING FLATS 0F CARDlNG-ENGINES.

SPECIFICATION forming part of Letters Patent No. 647,823, dated April17, 1900.

Application filed July 30, 1898. Serial No- 687,268. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH FOSSEL, a subject of the Emperor of Germany,and a resident of Boston, in the county of Suffolk and Commonwealth ofMassachusetts, have invented certain newand useful Improvements inGrinding Mechanism for Revolving Flats of Oarding-Engines, of which thefollowing is a specification, accompanied by drawings, forming a part ofthe same, in Which- Figure 1 represents a portion of the main cylinderof a carding-engine with my improved grinding mechanism attached theretoshown in side elevation. Fig. 2 is a rear view of a portion of thegrinding mechanism. Fig.

.3 is a sectional view on line 3 3, Fig. 2. Fig.

4 is a sectional view of part of the supporting-framework, showing thedevice for adjusting the grinding-roll.

Similar numerals refer to similar parts in thedifferent figures.

The object of my invention is to provide means for grinding the teeth ofrevolving flats while they are supported in their working position,thereby obviating the deflection of the flats and the irregularity ingrinding incident thereto, and also to provide means for pro- ,ducingthe requisite bevel of the card-surfaces, and, further, to simplify theconstruction of the grinding-mechanism and to provide means whereby thegrinding-roll may be readily adjusted or thrown out of action wheneverdesired without stopping the cardingengine, and I attain these objectsby the mechanism shown in the accompanying drawings and hereinafterdescribed, and specifically set forth in the annexed claims.

Referring to the drawings, 1 denotes a portion of the main cylinder ofacarding-engine to which the framework supporting my improved grindingmechanism is attached, said framework comprising a pair of brackets 2 2at opposite ends of the carding-engine, one of said brackets being shownin elevation in Fig. 1, the opposite bracket being a duplicate, exceptthat the brackets are right and left hand. J ournaled in the bracketsare shafts 3 and 4. The shaft 3 carries a pair of sprocket-wheels 5 5,and the shaft 4carriesa similar pair of sprocket-wheels, one of which isshown at 6, Fig. 3. As the revolving flats 7 are rotated over thesurface of the cylinder in the direction of the arrow 8 their lugs 9engage the sprocket-wheels and rotate the shafts 3 and 4 in thedirection of the arrows 1O 10. As the flats pass from the sprocketwheelson the shaft 3 to those on the shaft 4 they move in a straight line, andthe opposite ends 11 11 of each flat are supported upon the uppersurface of pivoted levers 12 12. Each of the levers 12 is pivoted nearone end to the supporting-brackets at 13 13, and they form a track onwhich the ends 11 of the flats rest as they pass over a revolvinggrindingroll 14, supported by plates 15 15, adj ustably attached to thebrackets 2 2 by bolts 16 16, passing through slots 17in the plates 15.The

grinding-roll 14 is journaled in sleeves 1818,

which rest in hooked bearings 19 19 in the plates 15 and are held inplace by curved latches 2O 20, loosely bolted to the plates 15 to allowthe insertion of the grinding-roll and afterward tightened to hold itinplace. The grinding roll 14 is adjusted vertically by means of adjlisting-screws 21, carried in lugs 22 projecting from the brackets 2 andbearing at each end against lugs 23.and 24 on the plates 15. The headsof the adj ustin g-screws 21 are provided with holes to receive aspanner,'which are accessible through openings 25 in the plates 15. Thefree ends of the pivoted bars 12 rest upon cams 26, carried upon a shaft27, journaled in the brackets 2 2, so that a partial rotation of theshaft 27 will give a rising-and-falling motion to the free ends of thepivoted levers 12 in order to vary the distance of the flats from thesurface of the grinding-roll 14 in order to produce the requisite bevelon the surface of the cardteeth. The shaft 27 is provided with aweighted radial arm 28 and also the radial arm 29, carrying anadjusting-screw 30, arranged to strike a fixed stop 31 and limit therocking motion of the shaft 27.

Attached to one end of the shaft 27 is aradial arm 32, having a bearingin its free end for a sliding bolt 33, which is pressed in by the arm 34of a coiled spring 35, pivotally attached to the radial arm 32. Attachedto one end of the shaft 4 is a ratchet-wheel 36, which is rotated by themovement of the flats in the direction of the arrow 37. Theratchet-wheel 36 is provided with teeth 38, which engage the end of thesliding bolt 33 and cause the bevel to the surface of the card-teeth.

arm 32 to move with the ratchet-wheel and rock the shaft 27 in thedirection of the arrow 39, thereby turning the cams 26 and allowing thefree ends of the pivoted bars 12 to V gradually fall, carrying the flatas it passes over the grinding-wheel 14 nearer the surface of thegrinding-wheelin order to givea slight The sliding bolt 33 is providedwith a beveled end 40, and as the arm 32 is carried by the ratchetwheel36 the beveled end of the sliding bolt is brought intocontact with thebeveled end 41 of a fixed arm 42, attached to one of the brackets 2,which causes the sliding bolt 33 to be pushed back against the tensionof the spring-arm 34 untilthe bolt is disconnected from theratchet-wheehwhen the weighted 3 arm 28 will reverse theshaft 27 untilthe adj Listing-screw 3O strikes the fixed stop 31, thereby raising thefree ends of the pivoted levers 12 into vposition forthe passage of thenext succeeding flat over the surface of the grinding-roll 14.Asthe-next flat begins to be ground the shaft 27 is again rocked by theengagementof the ratchet-wheel 36 with the sliding bolt 33, therebydepressing the free 'ends of the pivoted bars 12, and when the grindingof the flat is completed the shaft 27 is again released and reversed bythe weighted arm 28 bringing thev pivoted levers 12 into position forgrinding the next succeeding flat. The sliding bolt 33 is provided witha shoulder 43, between which and the arm 32 is'a spiral spring 44, whichis weakerthanthe spring-arm 34.

When it is desired to throw the grinding apparatus out of action duringthe operation path'of the teeth of the ratchet-wheel 36 and I allowingthe weighted arm 28 to rock the shaft of the carding-engine,thespring-arm 34 is,

rocked on its pivotal connection with thearm 32 and removed from the endof the sliding" bolt 33, thereby allowing'the spiral spring 44 towithdrawthe sliding bolt out of the 27 and hold the cams 26 in positionto permanently maintain the pivoted bars 12 12' in 7 their highestposition, so that the flats will be raised out of contact with thegrinding- W'hee114; p 4

Attached to the shafts 3 and 4 are disk wheels 45,"which are arranged torotate over the ends 11 of the flats as they pass along the "pivotedbars 12, and thereby hold them from I 1. In a mechanism for grinding theflats of carding-engines, the combination with a grinding roll, of apair of bars pivoted to the framework, a rocking shaft, cams attached.to said shaft and arranged to support the free ends of said bars, meansfor rocking saidshaft in one direction and means for reversing themotion of said shaft, substantially as described.

2. In a mechanism for grinding the flats of carding-engines,thecombination with a grinding-roll, of pivotedsupporting-bars on which the flats are presented to the grinding-roll, arocking shaft, cams attached to saidshaft by which said supportingrbarsare rocked, a rotating ratchet-wheel, an arm on said rocking shaftengaged by the teeth of said ratchetwheel, means for disconnecting saidarm from said ratchet-wheel, when the grinding of a flat has beencompleted, and means for reversin g the motion of said rocking shaft,substantially as described.

3. 'Ina mechanism for grinding the flats of carding-engines, thecombination with a grinding-roll, of a pair of supporting-bars pivotedto the framework on which the flats are presented tothegrinding-wheel,means for rocking said bars, means for moivingtheflats over said bars, sprocket-wheels engaged and rotated by said flats,and disk wheels, rotating overthe ends of'said flats, by which they areheld from rising OK the pivoted supportingbars, substantially asdescribed.

4. In a mechanism for grinding the flats ofcarding-engines,the'combination with a grinding-roll, of pivotedsupporting-bars on which the flats are presented to the grinding-roll, arocking shaft, cams attached to said shaft by which said supporting-barsare rocked, actuating mechanism by which said rocking shaft isrocked inone. direction and comprising a detachable clutchingmechanism, and acounterweight by which said rocking shaft is reversed, substantially asdescribed.

- 5. The combination of a grinding-roll, pivoted bars on which the flatsare supported, rocking'shafts, cams attached to said rocking' shafts bywhich said bars are rocked, an

arm on said rocking'shaft, a sliding bolt carried by said arm, aratchet-wheel engaged by said sliding bolt, a removable elastic arm bywhich said bolt is pushed toward said ratchetwheel, and a spring bywhich said bolt is withdrawn from the ratchet-wheel, substantially asdescribed.

6. The combination of a grinding-roll,

-means for supporting the flats as they are ground and means for varyingthe distance of the flat from the grinding-roll, comprising a rotatingratchet-wheel and an arm engaged thereby and means for disengaging saidarm as soon as the flat has been ground, substantially as described.

Dated this 13th day of July, 1898, at Newark, New Jersey. I

JOSEPH FOSSEL.

Witnesses: I V WILLIAM MONK,

- WILLIAM HARGREAVES.

